MCQ
The pyramid that cannot be inverted in a stable ecosystem, is pyramid of:
- ANumber
- ✓Energy
- CBiomass
- DAll of the above
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Match the following columns.
| Column $- I$ | Column $- II$ |
| $(a)$ Contraceptive pilll | $(1)$ Ejaculated semen would not enter into the female reproductive tract |
| $(b)$ Condom | $(2)$ Inhibit ovulation and implantation |
| $(c)$. Sterilsation | $(3)$ Increase phagocytosis of sperms |
| $(d)$ IUDs | $(4)$ Blocks gariete transport |